Maize Inbred 1PYRA69 Breeding Acceleration via Segmentation
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Solution Overview
Problem
The development of new maize varieties is a time-consuming process that takes six to twelve years, and there is a continuous need for stable, high-yielding maize varieties with improved traits such as disease resistance, drought tolerance, and better agronomic characteristics.
Innovation Solution
A novel maize variety, 1PYRA69, is developed through careful breeding and selection, incorporating traits like male sterility, disease resistance, and improved agronomic characteristics, using genetic manipulation and transformation techniques, and can be crossed with other varieties to produce hybrid seeds with desired traits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional breeding methods are used to develop new maize varieties, then the varieties can be stable and high-yielding, but the development process takes six to twelve years
Solution Approach 1:
The patent applies preliminary action by creating inbred lines through multiple generations of self-pollination before the actual hybrid development. This preliminary inbreeding process (6-12 years) establishes genetically stable lines that can then be rapidly combined through backcrossing and hybridization to produce new varieties, thereby preparing the genetic foundation in advance to accelerate subsequent variety development
Solution Approach 2:
The breeding process is segmented into distinct phases: (1) inbred line development through self-pollination, (2) backcrossing to introduce desired traits, (3) hybridization to combine traits, and (4) variety release. This segmentation allows each phase to be optimized independently, with the inbred lines serving as stable building blocks that can be rapidly recombined through modern breeding techniques to reduce overall development time
2Adaptability or versatility
If multiple desirable traits are combined in a single variety, then the variety becomes more versatile and productive, but the breeding complexity increases
Solution Approach 1:
The inbred lines developed through this patent serve multiple functions: they can be used as female parents in backcrosses to introduce traits like disease resistance and drought tolerance, they serve as male parents in hybridization to combine traits, and they provide genetically stable backgrounds for introducing multiple desirable characteristics. This multi-functionality allows a single inbred line to contribute to multiple breeding objectives simultaneously
Solution Approach 2:
The inbred lines act as intermediaries between the base variety and the final hybrid variety. These intermediate inbreds carry and stabilize multiple desirable traits (disease resistance, drought tolerance, yield characteristics) before being used in backcrosses and hybridization to transfer these traits to the target variety, thereby mediating the complex trait combination process
Data Source
AI summary
A novel maize variety designated 1PYRA69 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety 1PYRA69 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into 1PYRA69 through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby are provided. Hybrid maize seed, plants or plant parts are produced by crossing the variety 1PYRA69 or a locus conversion of 1PYRA69 with another maize variety.